How can controllers communicate with each other in AngularJS?
- Using $http service
- Using $rootScope
- Using $scope.$emit and $scope.$on
- Using ng-controller directive
Controllers in AngularJS can communicate with each other using the $scope.$emit and $scope.$on methods. $scope.$emit is used to broadcast an event upwards through the scope hierarchy, and $scope.$on is used to listen for and handle the emitted event. This mechanism allows controllers to exchange information and coordinate actions in a loosely coupled manner. Understanding this communication pattern is important for building modular and reusable AngularJS components.
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